Keepsake box



FIG. 1 is a front, bottom, left side perspective view of a design for a keepsake box, according to the present invention;

FIG. 2 is a rear, top, right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

Broken lines illustrate unclaimed subject matter. 

CLAIM The ornamental design for a keepsake box, as shown and described. 